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Looking for advice/recommendations for a crankset for my CX race bike. Currently running a Quark Riken with SRAM carbon arms and a Raceface 42t nw chainring. Functionally it is fine, but this is weight weenies.... IIRC this setup with the SRAM team BB was pushing 800g

Requirements:

Power measurement - ok with left leg measurement but not crazy about it

A P2M Rotor crankset mounted with 1X setup would do the trick, and pretty light also. Even with a 30mm axle, with a BSA30 BB. The Rotor Inpower is advertised at 525g ( without battery or chainring).

I'll run my DA 9000 left crank arm with a 4iii Precision PM on the CX bike this fall. Will probably just swich the left arm, and istall my old 7800 crankset with a single Narrow Wide ring. Not the lightest but easy swap, and functional.

Any advise for 1x11 crank when I want a 42 tooth chainring ?I was looking at the Quarq XX1 Eagle crank but it looks like 38 is the maximum I can run with this crank.I prefer a powermeter with left/right option.